CVE-2026-23748

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Source

https://cve.org/CVERecord?id=CVE-2026-23748

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23748.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-23748

Published

2026-02-26T17:31:32Z

Modified

2026-08-12T15:31:42Z

Severity

6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator

Summary

Golioth Firmware SDK < 0.22.0 LightDB State Out-of-Bounds Read

Details

Golioth Firmware SDK version 0.10.0 prior to 0.22.0, fixed in commit d7f55b38, contain an out-of-bounds read in LightDB State string parsing. When processing a string payload, a payload_size value less than 2 can cause a size_t underflow when computing the number of bytes to copy (nbytes). The subsequent memcpy() reads past the end of the network buffer, which can crash the device. The condition is reachable from on_payload, and golioth_payload_is_null() does not block payload_size==1. A malicious server or MITM can trigger a denial of service.

Database specific

{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-191"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23748.json"
}

References

Affected packages

Git / github.com/golioth/golioth-firmware-sdk

Affected ranges

Type

GIT

Repo

https://github.com/golioth/golioth-firmware-sdk

Events

Introduced

35c3085d0686b73b85cb7bd46c75adb828ce6a83

Fixed

d7f55b380d8be8b29bd101ce06e421af2e88c12b

Fixed

f15281671a9dd5c14a5215021f4469a8e3071b37

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0.10.0"
        },
        {
            "fixed": "0.22.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v0.*

v0.10.0

v0.11.0

v0.11.1

v0.12.0

v0.12.1

v0.12.2

v0.13.0

v0.13.1

v0.14.0

v0.15.0

v0.16.0

v0.17.0

v0.18.0

v0.18.1

v0.19.0

v0.19.1

v0.20.0

v0.21.0

v0.21.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23748.json"

vanir_signatures

[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "270491787148285070387330187905151400246",
                "195132740043648741634691365970305938567",
                "265329507019446736592808368929759304553"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-23748-b1e850b9",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/golioth/golioth-firmware-sdk/commit/d7f55b380d8be8b29bd101ce06e421af2e88c12b",
        "target": {
            "file": "src/lightdb_state.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "304645336577916009732044048905621108770",
            "length": 1186
        },
        "id": "CVE-2026-23748-fa2daa08",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/golioth/golioth-firmware-sdk/commit/d7f55b380d8be8b29bd101ce06e421af2e88c12b",
        "target": {
            "file": "src/lightdb_state.c",
            "function": "on_payload"
        }
    }
]

vanir_signatures_modified

"2026-08-12T15:31:42Z"